What are THREE false assumptions of phrenologists?
(Hint: check the previous page as well)
It is true that the amount of gray matter that is dedicated to a task will
increase with use of that task and is larger, as a proportion of brain
tissue, in people with talent and skill in a specific area Musicians
have more gray matter dedicated to music, mathematical
relationships, and motor control of the hands, than do
non-musicians. This effect is only seen when we look at the internal
structure of the brain with functional imaging - how much of the brain
lights up when we perform a task. It does not affect the overall size
and shape of the brain, and bits of the brain do not bulge out with
use
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Also, the brain is very jelly-like in consistency The soft brain conforms
to the shape of the skull, even in severe cases of cranial deformity due
to disease or the bindings which are practiced in some cultures. The
skull does not conform itself to the brain. The notion of bone changing
shape in reaction to underlying pressure is actually reasonable - bone
is plastic and will reform to accommodate pressure. Brain tissue,
however, is simply not capable of producing such pressure. Some
types of brain tumor, on the other hand, are and often changes in the
skull seen on X-ray can be a clue to an underlying tumor